content: package com.akansh.fileserversuit;
  
  import android.content.ContentUris;
  import android.content.Context;
  import android.database.Cursor;
  import android.net.Uri;
  import android.os.Environment;
  import android.provider.DocumentsContract;
  import android.provider.MediaStore;
  
  public class UriResolverUtil {
  
      /*
       * Solution from : https://stackoverflow.com/questions/20067508/get-real-path-from-uri-android-kitkat-new-storage-access-framework/20559175#20559175
       */
  
      /**
       * Get a file path from a Uri. This will get the the path for Storage Access
       * Framework Documents, as well as the _data field for the MediaStore and
       * other file-based ContentProviders.
       *
       * @param context The context.
       * @param uri The Uri to query.
       * @author paulburke
       */
      public static String getPath(final Context context, final Uri uri) {
  
          // DocumentProvider
          if (DocumentsContract.isDocumentUri(context, uri)) {
              // ExternalStorageProvider
              if (isExternalStorageDocument(uri)) {
                  final String docId = DocumentsContract.getDocumentId(uri);
                  final String[] split = docId.split(":");
                  final String type = split[0];
  
                  if ("primary".equalsIgnoreCase(type)) {
                      return Environment.getExternalStorageDirectory() + "/" + split[1];
                  }
  
                  // TODO handle non-primary volumes
              }
              // DownloadsProvider
              else if (isDownloadsDocument(uri)) {
  
                  final String id = DocumentsContract.getDocumentId(uri);
                  final Uri contentUri = ContentUris.withAppendedId(
                          Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
  
                  return getDataColumn(context, contentUri, null, null);
              }
              // MediaProvider
              else if (isMediaDocument(uri)) {
                  final String docId = DocumentsContract.getDocumentId(uri);
                  final String[] split = docId.split(":");
                  final String type = split[0];
  
                  Uri contentUri = null;
                  if ("image".equals(type)) {
                      contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
                  } else if ("video".equals(type)) {
                      contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
                  } else if ("audio".equals(type)) {
                      contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
                  }
  
                  final String selection = "_id=?";
                  final String[] selectionArgs = new String[] {
                          split[1]
                  };
  
                  return getDataColumn(context, contentUri, selection, selectionArgs);
              }
          }
          // MediaStore (and general)
          else if ("content".equalsIgnoreCase(uri.getScheme())) {
              return getDataColumn(context, uri, null, null);
          }
          // File
          else if ("file".equalsIgnoreCase(uri.getScheme())) {
              return uri.getPath();
          }
  
          return null;
      }
  
      /**
       * Get the value of the data column for this Uri. This is useful for
       * MediaStore Uris, and other file-based ContentProviders.
       *
       * @param context The context.
       * @param uri The Uri to query.
       * @param selection (Optional) Filter used in the query.
       * @param selectionArgs (Optional) Selection arguments used in the query.
       * @return The value of the _data column, which is typically a file path.
       */
      public static String getDataColumn(Context context, Uri uri, String selection,
                                         String[] selectionArgs) {
  
          Cursor cursor = null;
          final String column = "_data";
          final String[] projection = {
                  column
          };
  
          try {
              cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
                      null);
              if (cursor != null && cursor.moveToFirst()) {
                  final int column_index = cursor.getColumnIndexOrThrow(column);
                  return cursor.getString(column_index);
              }
          } finally {
              if (cursor != null)
                  cursor.close();
          }
          return null;
      }
  
  
      /**
       * @param uri The Uri to check.
       * @return Whether the Uri authority is ExternalStorageProvider.
       */
      public static boolean isExternalStorageDocument(Uri uri) {
          return "com.android.externalstorage.documents".equals(uri.getAuthority());
      }
  
      /**
       * @param uri The Uri to check.
       * @return Whether the Uri authority is DownloadsProvider.
       */
      public static boolean isDownloadsDocument(Uri uri) {
          return "com.android.providers.downloads.documents".equals(uri.getAuthority());
      }
  
      /**
       * @param uri The Uri to check.
       * @return Whether the Uri authority is MediaProvider.
       */
      public static boolean isMediaDocument(Uri uri) {
          return "com.android.providers.media.documents".equals(uri.getAuthority());
      }
  }
  